:root {
  --bg: #06100e;
  --panel: #0b1815;
  --panel-2: #10221d;
  --line: rgba(165, 255, 72, .18);
  --green: #b6ff3e;
  --green-2: #72d91f;
  --text: #f2f7f3;
  --muted: #9eaaa4;
  --orange: #ff8a38;
  --max: 1180px;
  --radius: 20px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 75% 7%, rgba(103, 181, 37, .14), transparent 27rem),
    linear-gradient(180deg, #071210 0%, #050b09 100%);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255,255,255,.07);
  background: rgba(5, 13, 11, .78);
  backdrop-filter: blur(18px);
}
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 900; letter-spacing: .04em; }
.brand-mark {
  width: 38px; height: 38px; display: grid; place-items: center;
  color: #07110f; background: var(--green); clip-path: polygon(50% 0, 100% 26%, 86% 86%, 50% 100%, 14% 86%, 0 26%);
  font-size: 14px;
}
.brand small { display: block; color: var(--muted); font-size: 10px; letter-spacing: .18em; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 28px; color: #c3ccc7; font-size: 14px; }
.nav-links a:hover { color: var(--green); }
.btn {
  display: inline-flex; min-height: 48px; padding: 0 22px; align-items: center; justify-content: center; gap: 9px;
  border: 1px solid var(--green); border-radius: 10px; background: var(--green); color: #08110e;
  font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 35px rgba(182,255,62,.18); }
.btn.secondary { background: transparent; color: var(--text); border-color: rgba(255,255,255,.2); }
.btn.secondary:hover { border-color: var(--green); color: var(--green); }
.btn.compact { min-height: 42px; padding-inline: 17px; font-size: 14px; }
.hero { position: relative; min-height: 720px; overflow: hidden; display: grid; align-items: center; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(4,11,9,.98) 7%, rgba(4,11,9,.88) 40%, rgba(4,11,9,.2) 76%, rgba(4,11,9,.72) 100%),
    linear-gradient(0deg, #06100e 0%, transparent 32%),
    url("image2.jpg") center/cover no-repeat;
  filter: saturate(.75);
}
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: .22; pointer-events: none;
  background-image: linear-gradient(rgba(182,255,62,.09) 1px, transparent 1px), linear-gradient(90deg, rgba(182,255,62,.09) 1px, transparent 1px);
  background-size: 72px 72px; mask-image: linear-gradient(90deg, #000, transparent 70%);
}
.hero-content { position: relative; z-index: 2; padding: 110px 0 120px; max-width: 720px; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--green); text-transform: uppercase; font-size: 13px; font-weight: 800; letter-spacing: .16em; }
.eyebrow::before { content: ""; width: 34px; height: 2px; background: currentColor; }
h1 { max-width: 760px; margin: 22px 0 20px; font-size: clamp(46px, 7vw, 88px); line-height: 1.02; letter-spacing: -.045em; }
h1 span { color: var(--green); }
.hero-lead { max-width: 630px; margin: 0; color: #bdc8c2; font-size: clamp(17px, 2vw, 20px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 36px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 14px 24px; margin-top: 34px; color: var(--muted); font-size: 13px; }
.hero-meta span { display: flex; align-items: center; gap: 8px; }
.hero-meta > span::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }
.section { padding: 104px 0; }
.section-label { color: var(--green); font-weight: 800; letter-spacing: .16em; font-size: 12px; text-transform: uppercase; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 46px; }
.section-head h2 { margin: 8px 0 0; font-size: clamp(32px, 4vw, 50px); line-height: 1.16; }
.section-head p { max-width: 500px; margin: 0; color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature-card {
  position: relative; overflow: hidden; min-height: 290px; padding: 28px;
  background: linear-gradient(145deg, rgba(18,38,32,.92), rgba(7,17,14,.92));
  border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius);
}
.feature-card::after { content: attr(data-number); position: absolute; right: 18px; bottom: -27px; color: rgba(182,255,62,.06); font-size: 96px; font-weight: 900; }
.feature-card:hover { border-color: var(--line); }
.icon { width: 48px; height: 48px; display: grid; place-items: center; margin-bottom: 52px; border: 1px solid var(--line); border-radius: 13px; color: var(--green); background: rgba(182,255,62,.06); font-size: 22px; }
.feature-card h3 { margin: 0 0 9px; font-size: 20px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; }
.showcase { background: #091411; border-block: 1px solid rgba(255,255,255,.06); }
.image-gallery { display: grid; grid-template-columns: 1.35fr .65fr; grid-template-rows: 260px 260px; gap: 18px; }
.gallery-card { position: relative; margin: 0; overflow: hidden; border-radius: 18px; border: 1px solid rgba(255,255,255,.1); background: #0b1512; }
.gallery-card:first-child { grid-row: 1 / 3; }
.gallery-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.gallery-card:hover img { transform: scale(1.025); }
.gallery-card::after { content: ""; position: absolute; inset: 30% 0 0; background: linear-gradient(transparent, rgba(2,8,6,.88)); pointer-events: none; }
.gallery-card figcaption { position: absolute; z-index: 2; left: 22px; right: 22px; bottom: 18px; font-size: 14px; font-weight: 700; }
.gallery-card figcaption span { display: block; color: var(--green); font-size: 11px; letter-spacing: .12em; }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.step { counter-increment: step; padding: 34px; border-left: 2px solid var(--green); background: rgba(255,255,255,.025); }
.step::before { content: "0" counter(step); display: block; margin-bottom: 44px; color: var(--green); font-weight: 900; letter-spacing: .12em; }
.step h3 { margin: 0 0 8px; font-size: 21px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }
.compat { display: grid; grid-template-columns: .9fr 1.1fr; gap: 24px; align-items: stretch; }
.compat-main, .compat-list { border-radius: var(--radius); border: 1px solid rgba(255,255,255,.08); background: var(--panel); }
.compat-main { padding: 44px; background: linear-gradient(145deg, rgba(38,67,23,.35), var(--panel) 65%); }
.compat-main .tag { display: inline-flex; padding: 6px 10px; border-radius: 999px; color: var(--green); background: rgba(182,255,62,.09); font-size: 12px; font-weight: 800; }
.compat-main h2 { margin: 24px 0 13px; font-size: 36px; line-height: 1.18; }
.compat-main p { color: var(--muted); }
.compat-list { display: grid; grid-template-columns: 1fr 1fr; padding: 18px; gap: 1px; background: rgba(255,255,255,.08); overflow: hidden; }
.compat-item { padding: 25px; background: var(--panel); }
.compat-item b { display: block; margin-bottom: 6px; }
.compat-item span { color: var(--muted); font-size: 13px; }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid rgba(255,255,255,.08); border-radius: 14px; background: rgba(255,255,255,.025); }
summary { cursor: pointer; list-style: none; padding: 21px 24px; font-weight: 750; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; color: var(--green); font-size: 20px; line-height: 1; }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 24px 22px; color: var(--muted); font-size: 14px; }
.refund-banner { margin-bottom: 104px; }
.refund-inner {
  display: flex; justify-content: space-between; align-items: center; gap: 34px; padding: 42px;
  border: 1px solid rgba(255,138,56,.35); border-radius: var(--radius);
  background: linear-gradient(105deg, rgba(255,138,56,.15), rgba(255,138,56,.025));
  box-shadow: inset 4px 0 0 var(--orange);
}
.refund-inner h2 { margin: 0 0 8px; font-size: 28px; }
.refund-inner p { margin: 0; color: #c7b5aa; }
.refund-inner .btn { border-color: var(--orange); background: var(--orange); white-space: nowrap; }
footer { border-top: 1px solid rgba(255,255,255,.07); padding: 34px 0; color: var(--muted); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.footer-links { display: flex; gap: 20px; }
.mobile-cta { display: none; }
@media (max-width: 900px) {
  .nav-links a:not(.btn) { display: none; }
  .hero { min-height: 650px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .image-gallery { grid-template-columns: 1fr 1fr; grid-template-rows: 410px 220px; }
  .gallery-card:first-child { grid-column: 1 / 3; grid-row: auto; }
  .steps { grid-template-columns: 1fr; }
  .step::before { margin-bottom: 20px; }
  .compat { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .nav { min-height: 62px; }
  .brand small, .nav .btn { display: none; }
  .hero { min-height: 690px; align-items: end; }
  .hero::before { background-position: 58% center; }
  .hero-content { padding: 130px 0 96px; }
  h1 { font-size: 48px; }
  .hero-actions .btn { width: 100%; }
  .section { padding: 76px 0; }
  .section-head { display: block; margin-bottom: 30px; }
  .section-head p { margin-top: 14px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 230px; }
  .icon { margin-bottom: 30px; }
  .image-gallery { display: grid; grid-template-columns: 1fr; grid-template-rows: repeat(3, 260px); }
  .gallery-card:first-child { grid-column: auto; }
  .compat-main { padding: 30px; }
  .compat-list { grid-template-columns: 1fr; }
  .refund-inner { display: block; padding: 30px; }
  .refund-inner .btn { width: 100%; margin-top: 24px; }
  .footer-row { display: block; text-align: center; }
  .footer-links { justify-content: center; margin-top: 16px; }
  .mobile-cta { position: fixed; z-index: 30; display: flex; inset: auto 12px 12px; gap: 8px; padding: 8px; border: 1px solid rgba(255,255,255,.12); border-radius: 14px; background: rgba(5,13,11,.92); backdrop-filter: blur(16px); }
  .mobile-cta .btn { flex: 1; min-height: 44px; padding: 0 12px; font-size: 13px; }
  body { padding-bottom: 76px; }
}